He soon, however, turned his attention to metaphysics and psychology, and for the North American Review and later for the National he wrote philosophical essays on the lines of Mill, Darwin and Spencer.

61, p. 444), and the instrument contains many elegant mechanical and optical details due to Horace Darwin and Messrs Zeiss respectively.

The origin and development of these conditions, in islands so distinctly oceanic as the Galapagos, have given its chief importance to this archipelago since it was visited by Darwin in the "Beagle."

Very complete collections have therefore, as a result of these expeditions, been brought together; but their examination does not materially change the facts upon which the conclusions arrived at by Darwin, from the evidence of the birds and plants, were based; though he "no doubt would have paid more attention to [the evidence afforded by Land-tortoises], if he had been in possession of facts with which we are acquainted now" (Gunther).

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Darwin theorized that mankind (both male and female) evolved alongside each other over millions of years, both reproducing after their own kind before the ability to physically have sex evolved. They did this through "asexuality" ("without sexual desire or activity or lacking any apparent sex or sex organs"). Each of them split in half. Ray Comfort